Saw attachment for the ends of moldboards



May 8, 1928. 1,668,850

J. M. LARSH SAW ATTACHMENT FOR THE ENDS 0F MOLDBOARDS Filed Mayl3. 19262 Sheets-Sheet 1 O 5 n 8 6 l J. M. LARSH SAW ATTACHMENT FDR THE ENDS OFMOLDBOARDS Filed May 16. 1926 2 Sheets-Sheet 2 Patented May 8, v

v v 1,668,850 v UNITED STATES (PATENT OFFICE.

son I. m, or nmuiuroms,

mm, or urmnuroms, nmznu.

AND ONE-FOURTH T0 ULYSSBB our! UAW ATTACHIIN'I' 1'03 TEE B NDB 01'HOLDBOABDS.

Appllettlol fled In! 18,

This invention pertains particularly to the mold board for road makingmachines, and an object of the invention is to rovide means forlengthening one or both of its ends in order to increase the operativereach or area of operation of the machine.

Second, to provide such an extension means which is capable of workingattachment in substantially the same plane thereby making a longer moldboard, or of attachment at an angle more nearly parallel with the lineof travel of the machine to act as a plow.

Third, to provide such an extension means which is capable of a swingingadjustment in a vertical plane at different angles to fodrm the slopingsides of a ditch at the roads1 e.

Fourth. to provide such an extension with a serrated lower edge, which,when the extension is set substantially parallel with the direction oftravel of the machine will act as a cutter of roots and brush. I

I accomplish the above, and other minor objects which will hereafterappear, by the mechanism illustrated in the accompanying drawings, inwhich- Fig. 1, is a top plan view, more or less diagrammatic in itsunessential parts, of a road making machine showing a mold board with myinvention applied at an angle to.

both of its ends.

Fig. 2, is a rear elevation of my improved attachment for the right endof the mold board, looking in the direction of the arrow in Fig. 3, andv Fig. 3, is a horizontal section on the line 3-3 of Fig. 2. I

Like characters of reference indicate like 1 parts in the several viewsof the drawings.

The front wheels 1, are preferably mounted on stubs which are connectedwith an axle 2 by vertical pivots 3, whereby the usual fifth wheelattachment of the front axle making a wide radius in turning the machineis obviated and a turn of the front wheels on pivot 3 in a small spaceis secured.

The rear wheels-4 are mounted on an axle 5 and the two axles areconnected by a reach 6. the body of which is bifurcated to moreadequately support a ring 7 which" aids in the attachment and control ofa mold board 8, the middle or body-part of which is 1988. lerial No.108,755.

of any usual and suitable construction. The mold board is swin 'n 1yattached by a vertical pin 9, aroun w 1ch it has swin horizontaladjustment by any usual and suitable means, not shown.

Attached to both ends of the mold board 8, are extensions 10, which,aside from bein in reverse, are alike in form and manner 0 attachment sothat a description of one will be understoodas ap lying to both.

The normal lengt of the mold board 8 is such as to just clear the frontand rear wheels in its swinging adjustments, and be cause it isfrequently desirable to extend this length to reach further in the samedirection, or vertically oblique to the bottom of the mold board to givea required slope to a roadside bank, or in other directions for INDIANA,ASSIGNOB 01' ONE-BALI TO. M I I. TAYLOR, OF INDIANAPOLIS, INDIANA,

other reasons, I provide an extension. This comprises a plate 11,preferably of steel having an inner end of ap roximately the same widthas the vertical width of the mold board. The outer end of this plate mabe of the same width but preferably, an as here shown, it is muchnarrower, thereby forming an oblique lower edge to which a serratedcutter blade 12 is bolted, as shown best in Fig. 2. The outer verticaledge 13 of this plate is sharpened and its opposite inner edge ispreferably beveled, as shown in Fig. 3, to increase its bearing againsta mold board splice plate 14, in the position of most general use of theextension.

The splice plate 14, is secured to the end of the mold board byremovable bolts 15, here shown as three in number, having beveled screwheads that are countersunk in the splice plate.

The splice plate has an outer row of boltholes, here shown as three innumber, for the attachment of a like number of eye bolts, 16. The spliceplates are locked between a pair of nuts '17 and 18, and the bolts arethreaded their entire length to afford a range of adjustment in thedistance of the eyes from the splice plate in varying the angularrelation of plates 11 and 14 to each other.

Riveted to plate 11, at suitable places, are plates 19, each having apair of perforated ears between which an eye of a corresponding one ofthe eye-bolts 16, is bolted.

Additional bolt-holes 20 are formed in the plate 11 on lines that areconcentric with for the lower eyebolt 16, whereby, by bringing saidradial lines into register with the holes for bolts 16, the plate 11 maybe bolted at the corresponding difierent angles by using common bolts inthe registering holes.

When it is desired to use the plate 11 m a plane parallel with the moldboard, as shown by dotted lines in Fig. 3, the plate 11 1s swung on itseye-bolts to that position and its outer end is held from swingingfurther back by substituting bolts of suitable length for the bolt 15,and seating their heads in suitable holes 22 in the plate 11.

The operation of my invention is illustrated in Fig. 1, wherein thereach, rear wheels, and mold board without end extension are shown indotted lines in well known o erative positions in which it will be notedt at the work of the mold board is confined within an area outlined bythe four wheels of the machine.

But should it be desired to operate upon a considerably wider area, themachine is adjusted by the usual mechanism provided for that purpose tobring the right rear wheel in line with the bottom of the ditch to bemade, and the extension plates 11, are bolted to the ends of the moldboard, with the mold board and the extension plates a proximately in thean ular positions relatlve to the direction 0 travel of" the machine asshown in full lines. Thus arranged, the extension 11 will act as a plowto dig into and start the dirt which will be carried over and back by Ithe mold board and discharged at the end of the board as a scraperinstead of a plow.

of the plate extension 11 at the left.

' Shouldthe mold board he set much nearer transversely of the machinethan shown in full lines in Fig. 1, it will not move the dirt back butwill cause it to accumulate in front Much of the strain on the mold boarand extension may be relieved by connecting the extension with the reachb means of a chain 25, as shown in Fig. 1. ttention is called to theadvantage of a short turn front wheel in the above operations whichallow the dirt to move close to the wheel without being so thrown as tointerfere with the proper functioning of the wheels.

A very important adaptability of my invention occurs in the use of-theserrated edge of extension 11 as a saw to cut off roots of trees andtangled vegetable growths that the makers of roads frequently encounter.To make the saw function best its length should be parallel with thedirection of travel of the machine. To secure this the mold board ismoved to the position shown by dotted lines 8, and the angle of plate 11is changed as shown to present its saw teeth on blade 12 in a linestraight ahead.

The teeth on lade 12 are sharpened as shown and. may be set to widen itskerf in the usual manner, and I have shown the innor edges of the teethcurved upwardly to reduce their clogging tendency. While I have shownone preferred form of apparatus, it is to be understood that-Icontemplate such changes as come within the spirit and scope of theaccompanying claims.

I claim- 1. In a road making machine, the combination with a mold board,of a serrated plate acting as a saw for one or both ends of the moldboard adjustable in its angular relation therewith, the teeth of saidlate having concaved inner edges and the iaces of the plate beingstraight in all directions.

2. In a road making machine, the combination with a mold board, of acutting attachment for one or both ends of the mold board, saidattachment having teeth acting as a saw, the faces of the attachmentbeing strai ht in all directions.

3. %n a road making machine, the combination with a mold board, of acutting attachment for one or both ends of the mold board, adjustable inits angular relation therewith, said attachment having teeth acting as asaw, the faces of the attachment being straight in all directions.

4. In a road making machine, the combination with a mold board, of asaw-toothe plate for one or both ends of the mold board, adjustablethere 'th to vary the vertical angle of the bottom line of the platewith a horizontal plane and means for causing the teeth of a plate tosaw in a single kerf all faces of the plate being straight in everydirection.

5.. In a road making machine, nation with a mold board, and a cuttinglaw on a plate having straight sides, of a splice plate secured to andbetween the mold board .and saw.

'6. Ina road making machine, the combination of a draw bar, a moldboard, a serrated plate having all sides straight in every directionhinged toan end of the mold board and acting as a saw, and a tie fromthe saw to the draw bar.

7. In a road making nation of a draw bar, a mold board, a serrated platehaving all sides straight in every direction secured to an end of themold board and acting as a saw, and means for tying the saw to the drawbar.

8. In a road making machine, board a serrated plate havin all sidesstraight in every direction hinged to the end of the mold board andacting as a saw, means for locking the serrated plate against anyswinging ad ustment.

9. In a road making board a serrated late acting as a saw, said platehaving all si es straight in every direction, means for securing theplate to the board said mean; being adapted to winmachine, the combi amold the combiingly adjust the platein a vertical plane, all sidesstraight in every direction, means and means for holding agivenadjustment. for changing the angular relation of their 10. In aroad making machine, a mold lower edges, and means for retaining all of10 board, a serrated plate acting as a saw, their adjustments. 5 meansfor hinging the plate to the mold In testimony whereof I afiix mysignaboard' for changes in angular relations of. ture. their planes toeach other, said plate having JOHN M. LARSH.

